Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-29-2010, 11:45 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Oct 2010
Location: Arizona
Posts: 69

EcoSentra - '04 Nissan Sentra
90 day: 35.93 mpg (US)
Thanks: 1
Thanked 7 Times in 4 Posts
Terminology for Engine off vs Engine on hypermiling techniques

Is there a good way to differentiate between Engine off and Engine on hypermiling techniques?

As I understand it EOC and P&G are typically engine off but don't need to be. I've seen some people use EO(n)C and EO(ff)C which is clearer but a little awkward. Haven't seen anything similar for P&G.

Just trying to get a better idea of what techniques people are using so I know what works and what works better.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-30-2010, 12:23 AM   #2 (permalink)
Pishtaco
 
SentraSE-R's Avatar
 
Join Date: Jun 2009
Location: Bay Area, California
Posts: 1,485

Mean Green Toaster Machine - '06 Scion xB
Team Toyota
90 day: 48.92 mpg (US)
Thanks: 56
Thanked 285 Times in 181 Posts
Talk to six hypermilers, and you may hear half a dozen different descriptions of what they do. One will glide, another will coast. A third will say he does it NICE-on, the fourth does EOC.

My '02 SE-R didn't like the engine off, so I rarely shut it off. If I did, it would run in open loop for 4 miles, negating all the gains I made from shutting it off. It also hated to go into DFCO. I had to be over 2500 rpm to get DFCO, 65 mph or faster in 6th gear. It was a difficult car to hypermile.

My '06 xB can coast engine off for miles, and still be in closed loop when I restart it. It loves DFCO, entering it when the engine is >1500 rpm, about 35 mph or faster in 5th gear. It's a breeze to hypermile it.
__________________
Darrell

Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
  Reply With Quote
Old 10-30-2010, 08:45 AM   #3 (permalink)
Coasting Down the Peak
 
skyl4rk's Avatar
 
Join Date: Jun 2008
Location: M I C H I G A N
Posts: 514

Toyauto Pickup - '94 Toyota Pickup 2WD
90 day: 36.32 mpg (US)

Versa Base - '09 Versa Sedan 1.6 Base
Team Nissan
90 day: 41.69 mpg (US)
Thanks: 27
Thanked 41 Times in 34 Posts
PNG means pulse and glide with engine on
EOC means engine off coasting, usually with a bump start at the end of a coast.
__________________
Nissan Versa Aeromods
  Reply With Quote
Old 10-30-2010, 12:49 PM   #4 (permalink)
Smeghead
 
Join Date: Oct 2009
Location: South Central AK
Posts: 933

escort - '99 ford escort sport
90 day: 42.38 mpg (US)

scoobaru - '02 Subaru Forester s
90 day: 28.65 mpg (US)
Thanks: 32
Thanked 145 Times in 97 Posts
my understandin/vote is for.
EOC engine off coast
neutral coast is engine on

P&G pulse and engine off glide.
PNG pulse and neutral glide (engine on).
__________________

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.

One mile of road will take you one mile, one mile of runway can take you around the world.

Last edited by bestclimb; 10-30-2010 at 03:36 PM..
  Reply With Quote
Old 10-30-2010, 03:06 PM   #5 (permalink)
The PRC.
 
Join Date: Oct 2009
Location: Elsewhere.
Posts: 5,304
Thanks: 285
Thanked 535 Times in 384 Posts
Apologies I probably started this (O)n vs (O)ff terminology mainly because I wasn't clear on the terms used - I think the explanations above probably clear it up.

I wanted to be clear on what I meant in my posts because I was looking at the effects of shutting off an engine with a turbo suddenly vs an engine which does not have one.
__________________
[I]So long and thanks for all the fish.[/I]
  Reply With Quote
Old 10-30-2010, 04:21 PM   #6 (permalink)
Coasting Down the Peak
 
skyl4rk's Avatar
 
Join Date: Jun 2008
Location: M I C H I G A N
Posts: 514

Toyauto Pickup - '94 Toyota Pickup 2WD
90 day: 36.32 mpg (US)

Versa Base - '09 Versa Sedan 1.6 Base
Team Nissan
90 day: 41.69 mpg (US)
Thanks: 27
Thanked 41 Times in 34 Posts
PNG == P&G

and both are with the engine on

amirite?
__________________
Nissan Versa Aeromods
  Reply With Quote
Old 10-30-2010, 04:28 PM   #7 (permalink)
aero guerrilla
 
Piwoslaw's Avatar
 
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,541

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,056
Thanked 630 Times in 396 Posts
Quote:
Originally Posted by Arragonis View Post
Apologies I probably started this (O)n vs (O)ff terminology mainly because I wasn't clear on the terms used - I think the explanations above probably clear it up.
Yes, you did, and I plan to use that terminology until I come across (and hardwire it into my brain) something better. By "better" I mean not only distinguishing between engine on and off, but also written in such a way that new members will not get it confused. For example, only recently did I find out that P&G implies engine offing, and not general "accelerate&coast regardless of the state of the engine".
__________________
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell

Piwoslaw's Peugeot 307sw modding thread

  Reply With Quote
Old 10-30-2010, 04:29 PM   #8 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location: ˙
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 158
Thanked 267 Times in 210 Posts
Quote:
Originally Posted by skyl4rk View Post
PNG == P&G

and both are with the engine on

amirite?


no, p&g is engine off according to the glossary
http://ecomodder.com/forum/showthrea...e-ii-3505.html

and I think you just made up PNG
__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
Old 10-30-2010, 04:35 PM   #9 (permalink)
The PRC.
 
Join Date: Oct 2009
Location: Elsewhere.
Posts: 5,304
Thanks: 285
Thanked 535 Times in 384 Posts
I have created a monster, a monster....

I think unless someone specifically says Engine Off then assume they are on. Of course feel free to ask, everyone is nice here.
__________________
[I]So long and thanks for all the fish.[/I]
  Reply With Quote
Old 10-30-2010, 09:05 PM   #10 (permalink)
Master EcoModder
 
Join Date: Sep 2010
Location: Foothills near Denver
Posts: 279

RSX2fast4mpg - '02 Acura RSX Type S
90 day: 38.22 mpg (US)

bubbatrucker - '98 Chevrolet K1500
90 day: 18.1 mpg (US)
Thanks: 15
Thanked 25 Times in 17 Posts
Ok, tangent time. What's open loop vs closed loop and how would I know the difference while driving?

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
idea, 4 cylinder to 2 cylinder engine conversion saand EcoModding Central 152 01-02-2016 03:33 AM
Heated Fuel bennelson EcoModding Central 74 01-25-2014 03:50 PM
Some Hypermiling techniques denounced by AAA Lazarus Hypermiling / EcoDriver's Ed 135 04-17-2011 04:07 AM
Mer-Chevy Project: Biofuel 40mpg Pickup bennelson EcoModding Central 128 07-27-2010 06:15 PM
Article: Lean burn on an otherwise stock engine (testing Acura RSX K-Series engine) tjts1 EcoModding Central 4 01-07-2010 01:22 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com